Home / 54,398.40-81,581.19-21,111.04

Finding the Fourth Proportional to 54,398.40, 81,581.19 and 21,111.04

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Solution

The fourth proportional to 54,398.40, 81,581.19 and 21,111.04 is: 31,660.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,398.40 : 81,581.19 = 21,111.04 : x
  2. Step 2: Convert to fraction form
    54,398.40/81,581.19 = 21,111.04/x
  3. Step 3: Cross multiply
    54,398.40x = 81,581.19 × 21,111.04
  4. Step 4: Simplify right side
    54,398.40x = 1,722,263,765.34
  5. Step 5: Solve for x
    x = 1,722,263,765.34/54,398.40
  6. Step 6: Final answer
    x = 31,660.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.